GW keeps de-activating itself and now says my serial is invalid

I purchased an Elite key some time ago. Glasswire keeps deactivating itself on at least one of my PC’s, and as of this week, when I try to reactivate, am told my serial is not valid now.

Same deactivation issue here using Glasswire Pro v2.3.413 on a new Windows 11 21H2 laptop. I usually get the notice to reactivate GW after the laptop boots or was in sleep mode (no, GW service is not blocked). I don’t have this issue on 2 other PCs running same GW version but its certainly been a frustrating issue…